\documentclass[a4paper,10pt]{article}
\usepackage[utf8x]{inputenc}

%opening
\title{}
\author{}

\begin{document}


\section*{}

\begin{table}[h]


   \begin{tabular}{|l|c|r|}
  

    \hline
    Paul&
\multicolumn{2}{|c|}{$titi$ LexYAcc}\\
    \hline
    LOPES&11&ffff\\
    \hline
    1.23&salut&   Bonjour\\
    \hline
 
   %%    \caption{accuracies}
%%http://fr.wikibooks.org/wiki/LaTeX/Faire_des_tableaux
  \end{tabular}

 \caption{accuracies}
      \label{tab:accuracies}


\end{table}
\end{document}

